Carbureter for internal-combustion engines.



o. J. MEGEVET a. L. PICKER. GARBURBTER FOR INTERNAL GOMBUSTION ENGINES.

APPLICATION FILED FEB.8, 1912.

Patented Mar. 17, 1914.

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To all whom t may concern En sfrn'rnrnnr rmcn.

CHARLES JULES IVIGEVET AND LCIEN PICKER, OE GENEVA, SWITZERLAND.

GRERETER FOR INTERNAL-COMBUSTION ENGINES.

-Beit known that we, CHARLES GEVET, manufacturer, and LUCIEN PICKER,

for internal combustion engines of the type engineer, both citizens of Switzerland, residing at Rue Malatrex T land 9, Geneva, in the Confederation of Switzerland, have invented certain new and useful Improvements in Carbureters for Internal-Combustion Engines,

of which the following isa specification.

The presentinvention refers to carbureters in which the liquid fuel isv supplied to a spraying nozzle and air is passed over the nozzle, causing spraying of the fuel, to which mixture Vof fuel and airV a regulatable quantity of air is added before the same is admitted to the cylinder.

According to the present invention, the

admission of the air is controlled by two valves, the relative positions of which may at will be changed to modify the ratio of the sections of` the passages for the mixture from the nozzle and the diluting` air. The said valve may further'be arranged so as topprovide for a regulation of the section of the passage forr the mixture from Vthe nozzle without changing the position of the valve controlling the admission of the diluting air so as to permit the adjustment ofthe carbureter for the working at full load of the motor without any adjustment for the working with reduced load and vice-versa, as will hereinafter be more particularly described.

In the drawing, Figure l is a horizontal section of our improved carbureter. Fig. la is a partial detail plan view some parts being shown in section. Fig. 2is a section along line A--B of Fig. 1. Fig. Sis a section along line C-D of Fig. 2, and Fig. 4: is a diagrammatic view illustrating a mod iedform of the inletvalves.- l

a is the spraying nozzle of usual type toA spraying nozzle is placed in the end of the channel and the carbureted gas is drawn into the motor at the other end thereof. By so doing, the small drops orparticles of liquid Specification of Letters Patent.

JULES M- Patented Mal. 17, 1914-.

i fuel issuing from the nozzle are projected against the surface e where they are still further atomized. rl`he bent form of that part of the channel further causes the mixture to whirl in flowing through the apparatus and thus a thorough mixture of the atomized fuel with the air is produced.

The quantity o-f gas mixture admitted to the motor is controlled by the cylindrical piston 1 valve f, the free end of which may more or less obstruct the passage through which the mixture from the nozzle reaches the inlet opening d. In the said valve there is provided an inlet opening f1 (see Fig. la) for `additional air. The piston valve f is slidably mounted in a sleeve valve c', in which there is provided an; opening l for the passage of the air. The valve z' carries a lug or protruding part 2 provided with a screw screwed in a corresponding lug Z1 of the casing Z of the carbureter and connected to the valve f is a rod g on which is mounted a nut g1. Surrounding the rod g is a spring it, one end of which contacts with the nut g1 and the other end o-f which rests in a depression of a revoluble head m. This head m -is seated on the freeend of the sleeve z' and is provided with a hub through which the rod g passes. A stud g2 is xed in the rod g and extends into a longitudinal groove in the hub of the head m in which latter the studmay move longitudinally, thus Vproviding for a longitudinal or axial movement of ythe cylindrical piston valve f, but causing the same to be turned whenever the head m is turned on the sleeve z'.

r The different parts of the carbureter being `in the positions shown inthe drawing, the piston valve may be moved from left to right, in Fig. 2, `by compressing the spring h. This may be caused by the action of the governor of the motor on the rod g or any other device 'for causing the throttling of the gases, the free end of the piston 7 reduces the area of the` passage for the mixture from the nozzle, and at the same time the opening f1 is shifted relatively to the opening '51, and thus the passage for the admission of air is also reduced. In this manner, the quantity of carbureted gas admitted to the motor is reduced but the composition of the mixture admitted to the cylinder during the operation at reduced load of the motor is not changed and thus a constant composition of the mixture for all loads is obing f1 may be shifted relatively to the opening l and thus the area vof the passage for the air may be adjusted, during the operation of the motor, Withoutany change in the area of the passage for the mixture from the nozzle. Thus the proportion of inixture from the nozzle and the air, or the coinposition of the gas mixture supplied to the motor for the operation atreduced load may be regulated, and said composition having been adjusted remains constant for any position of the piston valve f because if said piston valve is actuated to cause tliiottling of the mixture from the nozzle, a corresponding reduction of the area of the opening i'or the admission of air is produced at the same time, as herein before explained. @n the other hand, Whenever the screw is screwed or unscrevved, the sleeve z' and the valve f are moved together Without any change of their relative position. Thus no change is made in the area of the opening for the admission of air but the free Yend of the piston f beino shifted relatively to the inlet opening cl, die area of the passage for the mixture -from the nozzle is changed and thus the proportions of the composition of the carbureted gas supplied to the motor for the operation at full load of the saine may be adjusted.

I/Ve claim as our invention:

l. A carbureter comprising a casing having a passage therein leading from an air inlet to an inlet for an engine cylinder, a spraying nozzle in the said passage, a cylindrical valve, a sleeve valve placed con- Acentrically on the cylindrical valve, the said valves being provided With apertures and being revolubly adjustable to regulate the available area of said apertures, and means` for moving .said valves together longitudinally to adjust the cylindrical valve to posi-- tion to control the inlet to the said engine cylinder Without changing the available area of said apertures.

2. In a carbureter and in combination, a casing having a passage therein vleading from a free air inlet to an inlet for an enthrough the hub on said head, a stud fixed v Y on said rod and enteiin @the longitudinal slot in said hub, a helicala spring, surrounding saidrod, a nut'` upon the free vend Vof said rod, one end of the `said helical spring contacting with said nut, and its other end resting in a depression in the said head I aroundits hub. e. e

3.`In a carbureter and in combination, a casing having a passage therein leading from the free air inlet to, an inlet for an,V engine cylinder, and provided With a lug on one side, a spraying nozzle in saidipas'- sage, a sleeve valve having an air inlet therein and provided with a lugV corresponding with and in alinement with the said lugA upon the casing, an adjusting screiv con--V necting said lugs, a VrevolubleV head seated upon the free end-of said sleeve valve and provided with an inturned hub having a longitudinal slot therein, a'cylindrical valveV slidably mounted Withinsaid sleeve valveV and provided With an air, inlet, a rod havingV one end connected to said cylindrical valve and passing through the hub on said head, :ij i stud fixed on said rod and entering the lon- Y gitudinal slot in said hub, a helical spring Vsurrounding said rod, Vavnut upon the free end of said rod, one end of said helical spring contacting with said nut andV its other end resting in a depression in the said head around its hub.

In testimony Whereot We have afixed our signatures in presence of two Witnesses.

CHARLES'JULES MGEVET. Y

LUGIEN PICKER. Witnesses:

G. IMER,

M. IMER.

Copies of this patent may be obtained for ve cents each, by addressing the "Commissioner-of Patents Washington.I D. C." 

